Diuretics are drugs that increase the rate of urine flow and sodium excretion, and are used to adjust the volume and composition of body fluids in a variety of clinical conditions. Several diuretic agents are available in the market, but they are associated with a multitude of problems which are not yet solved. These limit their clinical usefulness and calls for the search for new and better compounds. This study aimed to investigate the diuretic activity of different solvent fractions of 80% methanol root extract of Clutia abyssinica, an extensively used plant in Ethiopian folk medicine. The roots of Clutia abyssinica were subjected to successive maceration followed by liquid-liquid extraction. Male rats were treated with vehicle (distilled water or 2% Tween 80), standard (Furosemide 10 mg/kg) and three doses (100, 200 and 400 mg/kg) of 80% methanol extract and solvent fractions. Parameters, including urine volume, electrolyte concentration and pH were measured. The 80% methanol extract produced significant diuresis (p